Add missing semicolon (#1750)

diff --git a/src/rp2_common/hardware_irq/irq.c b/src/rp2_common/hardware_irq/irq.c
index f3398c4..6347fb5 100644
--- a/src/rp2_common/hardware_irq/irq.c
+++ b/src/rp2_common/hardware_irq/irq.c
@@ -206,7 +206,7 @@
 void irq_add_shared_handler(uint num, irq_handler_t handler, uint8_t order_priority) {
     check_irq_param(num);
 #if PICO_NO_RAM_VECTOR_TABLE
-    panic_unsupported()
+    panic_unsupported();
 #elif PICO_DISABLE_SHARED_IRQ_HANDLERS
     irq_set_exclusive_handler(num, handler);
 #else